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Readers ask: Why do my hollyhock leaves turning brown?

Puccinia malvacearum, the rust fungus that infects hollyhock, causes yellow spots on the upper leaf surface, and orange-brown raised pustules on the lower leaf surface. Wet conditions promote infection by the rust fungus. Infected leaves eventually turn brown, wilt, and die.

How do you treat rust on hollyhocks?

Cut down hollyhock plants at the end of the season and burn or bury the debris. Use fungicides if necessary. Chlorothalonil and sulfur are good choices. Apply them every seven to ten days or more often if it rains.

How do you keep hollyhocks healthy?

Tips for Maintaining Your Hollyhocks

  1. Plant Hollyhocks in a Suitable Location. Hollyhock’s relish full sunlight with balanced soil that drains efficiently.
  2. Water Hollyhocks Regularly.
  3. Fertilizer Use.
  4. Companion Planting.
  5. Remove Spent Blossoms.
  6. Prune Your Hollyhocks.
  7. Winterizing Your Hollyhocks.

How often should hollyhocks be watered?

Water daily for the first few weeks after planting, and regularly after that, keeping the soil is moist but not waterlogged. Once hollyhocks grow to maturity, they become relatively drought-tolerant, so you can then decrease your watering frequency to two to three times per week for the rest of the growing season.

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What does rust look like on hollyhocks?

What does hollyhock rust look like? Initial symptoms of hollyhock rust are orange to yellow spots (roughly ⅛ to ¼ inches in diameter) on lower leaves. Irregular brown areas may also develop on stems. Severely affected leaves often develop holes that give them a lacy appearance.

Do hollyhocks like full sun?

Hollyhocks are not fussy and survive in many spots but do best in soil that has been amended with compost. They do not like dry soil. With adequate moisture and good drainage, hollyhocks can thrive in full sun or partial shade. Try them in a few different spots in your yard and see where they are happiest.

How do you get rid of rust fungus?

How to Control Rust Fungi

  1. Remove all infected parts and destroy them. For bramble fruits, remove and destroy all the infected plants and replant the area with resistant varieties.
  2. Clean away all debris in between plants to prevent rust from spreading.
  3. Avoid splashing water onto the leaves, as this can help spread rust.

Why are my hollyhock leaves curling?

Leafhoppers cause the leaves to curl upward at the tips and large areas to turn brown and dry out. Japanese beatles may chew the leaves when the plants are blooming, and hollyhock leaf skeletonizer may skeletonize the leaves. Japanese beetles and skeletonizers can be hand-picked; leafhoppers should be sprayed when

What kind of fertilizer do hollyhocks like?

Fertilize the hollyhock plant two times per year, once in the early spring as it begins the growing cycle, and again in the fall to sustain it through the winter. Use a balanced fertilizer, such as 10-10-10 or 15-15-15.

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What is killing my hollyhocks?

Hollyhock Weevil Damage Weevil pests on hollyhocks cause only minor visual damage, chewing small holes in hollyhock leaves and flowers. However, they can cause serious damage to the overall lifespan of hollyhock stands. Larval hollyhock weevils develop within the hollyhock seed pods, using embryonic seeds for food.

Where is the best place to plant hollyhocks?

Plant in a well-draining area with full sun to partial shade. Due to their height, protect from damaging winds and provide support such as a fence, wall, trellis or stake. Hollyhocks will readily self-seed if left to their own devices, so locate them in an area where this won’t be a nuisance.

Can you put hollyhocks in pots?

Hollyhocks require a large container, such as whisky barrel to allow room for their roots to grow. Although dwarf varieties have smaller roots, the more room you give them the happier they will be.

Should I deadhead hollyhocks?

Deadheading hollyhock plants isn’t necessary, but it is a good idea. It can help keep the blooms going longer throughout the season and also keeps your plants looking nicer and tidier. Hollyhock is a biennial in most growing zones, but if you let the seed pods develop and drop, they will regrow from year to year.

How do you grow hollyhocks successfully?

Hollyhocks need full sun and moist, rich, well drained soil. The mistake many novice hollyhock growers make is to plant this flower in soil that’s too dry. If you are planting seeds, sow them outside about a week before last frost. If you are planting seedlings out, wait about two to three weeks after last frost.

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Should you fertilize hollyhocks?

Hollyhocks don’t need heavy fertilization. Over-fertilization can result in leggy, weak stems and poor flowering. Too much nitrogen can also aid fungal disease growth.

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